Four-horse equalizer.



J. H. POST.

FOUR HORSE EQUALIZER. APPLICATION FILED MAY 17, 1912.

1,037,310, Patented Sept. 3, 1912.

Wynfiw; Y

COLUMBIA PLANOORAPH C0" WASHINGTON. D. c.

JOHN H. POST, 0F FLANAGAN, ILLINOIS.

FOUR-HORSE EQUALIZER.

Specification of Letters Patent.

Patented'Sept. 3, 1912.

Application filed. 17, 1912. Serial No. 697,995.

To all whom it may concern:

Be it known that I, JOHN H. Pos'r, a citizen of the United States,residing at Flana gan, in the county of Livingston and State ofIllinois, have invented certain new and useful Improvements inFour-Horse Equalizers; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to four horse equalizers for use in connectionwith plows; and it consists in the novel construction and C0111-bination of the parts hereinafter fully clescribed and claimed.

In the drawings, Figure 1 is a plan view of a four horse equalizerconstructed according to this invention. Fig. 2 is an end View of therear part of the equalizer.

The plow beam is rigidly connected to the rear part of a draft plate 2,so that the plow cannot move pivotally of the draft plate, and the line3 represents the normal line of draft of the plow. The draft plate 2 isshaped like a scalene triangle, and the plow is connected to itsshortest side. A bell-crank lever A has the middle part of its longerarm 5 pivoted by a pin 6 to the apex of the plate 2, and the pin 6 isarranged on the same side of the line .of draft as the shorter arm ofthe bell-crank lever 4:, which arm is arranged to project rearwardly. Athree horse equalizer 7 is connected to the free end portion of thelonger arm 5 by a link 8, and so that the three horses are arranged oneon the center line of draft, and the other two 011 equal distances oneach side of it. The three horse equalizer preferably has a whiiiletree10 connected to the long end of an equalizing bar 11, and a doubletree12 connected to the shorter end of the equalizing bar 11. Twowhiflietrees 14: are connected to the doubletree 12, one at each endthereof.

The bell-crank lever 4 preferably consists of two plates securedparallel to each other. A second bell-crank lever 16 is provided, andits longer arm 17 is arranged to project in the opposite direction fromthe longer arm 5 of the bell-crank lever A. A coupling-- rod 18 ispivoted by pins 19 to the rear end portions of the shorter arms of thetwo bell-crank levers. A second coupling-rod 20 is arranged in front ofthe coupling-rod 18, and is pivoted at one end on the pin 6, and

at the other end by a pin 21 to the angle portion of the outerbell-crank lever 16. A whifiietree 22 is connected to the longer arm 17of the bell-crank lever 16, and this bellcrank lever 16 has a pluralityof holes for each of its pivot pins, as shown, so that adjustment may beeffected to equalize the pull of the single horse at this point with thepull of the three horses of the three horse equalizer.

A short offset link 25 is pivoted by a pin 26 to the middle part of thedraft plate 2, and a long link 27 is pivoted at one end to the link 25by a pin 28. The other end of the long link 27 is pivoted by a pin 29 tothe outer end portion of the coupling-rod 20 near the pin 21. The twolinks 25 and 27 are normally arranged in line with each other, anddiagonally of the two couplingrods, and the long link projects acrossthe short arm of the bell-crank lever 4. The links 25 and 27, when inline with each other prevent the outer bell-crank lever 16 from beingmoved bodily forward, but permit it to move pivotally on the pin 21.These links move out of line with each other to permit the bell-cranklever to move bodily to the rear. These bell-crank levers and theirconnections equalize the pull of the four horses, and enable the fourhorses to be arranged to the best advantage for plowing, and so thatthey pull straight ahead, and pull the plow straight, and with dueallowance for side draft.

What I claim is:

1. A four horse equalizer, comprising a draft plate for attachment to aplow beam, a bell-crank lever having the middle part of its longer armpivoted to the draft plate, a three horse equalizer connected to thefreeend portion of the said arm, an outer bellcrank lever having itslonger arm projecting in the opposite direction from the longer arm ofthe first said bell-crank lever, a front coupling-rod and a rearcoupling-rod pivotally connecting the two bell-crank levers, awhiflietree connected to the longer arm of the outer bell-crank lever,and two jointed links arranged diagonally of the coupling-rods andpivoted to the outer end portion of the front coupling-rod at one endand to the said draft plate at the other end.

2. A four horse equalizer, comprising a draft plate for attachment to aplow beam, a bell-crank lever having the middle part of its longer armpivoted to the draft plate,

nally across the shorter arm of the first said bell-crank lever, and ashort offset link pivoted to the long link and to the said draft plateand normally arranged in line With.

the long link.

In testimony whereof I have affixed my signature in the presence of twoWitnesses.

JOHN H. POST.

WVitnesses J. H. LINNEMAN, J 1'., BEN WVIoI-IMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

